Thermoreactors are required for the determination of COD, total nitrogen or total phosphorus. They ensure complete digestion of the sample, as they maintain the necessary high reaction temperature throughout the defined period.

CR 2200
Ideal for performing routine water analysis tests with small sample amounts, as 7 programs are available for digestion of 12 sample cuvettes at 100, 120, 148 and 150 ° C ( 212, 248 and 298.4 ° F) .

CR 3200
In addition, you can program the CR 3200 to carry out 8 of your individual digestions at freely selectable temperatures up to 170 ° C ( 338 ° F) .

CR 4200
The right choice for performing multiple tests simultaneously, such as COD ( 148 ° C/ 298.4 ° F) and total-N ( 120 ° C/ 248 ° F) , as the two thermoblocks for 12 cuvettes can each be controlled separately. It also has memory for 8 of your own user-defined programs with free temperature selection up to 170 ° C ( 338 ° F) .